BMW decided to give us a preview of the production 5-Series Gran Turismo through an official video featuring an interview with the car's project manager, Hans-Jurgen Branz. Compared to the Geneva concept car, not much has changed on the outside as the only significant differences seem to concern the conventional exterior mirrors and alloy wheels. The interior however is another story as BMW toned down the design and removed the funky trim options in favor of a more production-style look. Hit the jump for the video and a gallery with screen shots of the 5-Series GT that will be officially introduced at the Frankfurt Show this September.